1-Naphthyl phosphate monosodium salt monohydrate
1-Naphthyl phosphate monosodium salt monohydrate (CAS: 81012-89-7) is a biochemical reagent with the molecular formula C10H7OP(O)(OH)(ONa) · H2O and a molecular weight of 264.15. This compound serves as a preferred substrate for the bioanalytical determination of acid phosphatases, particularly prostatic acid phosphatase. It is supplied by Tech Serve Solutions with an assay of ≥98.0% (HPLC), ensuring high purity for research applications.
- IUPAC
- α-Naphthyl phosphate monosodium salt monohydrate,Sodium 1-naphthyl phosphate monohydrate

Acid Phosphatase Determination
This compound is a preferred substrate for the quantitative bioanalytical determination of acid phosphatases. It is especially valuable for assays involving prostatic acid phosphatase, offering a reliable method for enzymatic activity measurement.
Biochemical Research
As a high-purity biochemical reagent (≥98.0% HPLC), it is suitable for various enzyme-related research applications. Its specific reactivity makes it an important tool in studying enzyme kinetics and biological pathways.
Enzyme Substrate Studies
Used in studies focused on enzyme mechanisms and inhibition, this naphthyl phosphate derivative provides a chromogenic or fluorogenic endpoint upon enzymatic cleavage, facilitating the detection and quantification of enzyme activity.
| Molecular weight | 264.15 |
|---|---|
| Linear formula | C10H7OP(O)(OH)(ONa) · H2O |
| Assay | ≥98.0% (HPLC) |
| Solubility | H2O: soluble50 mg/mL, clear, colorless |
| Storage temperature | 2-8°C |
| Impurities tested | ≤0.1% free naphthol |
| Application | Preferred substrate for bioanalytical determinations of acid phosphatases, such as prostatic acid phosphatase. |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1-Naphthyl phosphate monosodium salt monohydrate used for?
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1-Naphthyl phosphate monosodium salt monohydrate is primarily used as a preferred substrate for the bioanalytical determination of acid phosphatases, notably prostatic acid phosphatase. It is also utilized in biochemical research and enzyme substrate studies.
What are the CAS number and formula for this product?
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The CAS number is 81012-89-7, and the linear formula is C10H7OP(O)(OH)(ONa) · H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Naphthyl phosphate monosodium salt monohydrate with an assay of ≥98.0% determined by HPLC. This product is intended for research and laboratory use and is not supplied as USP, BP, EP, or pharmacopoeia grade.
How should 1-Naphthyl phosphate monosodium salt monohydrate be handled?
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Handle with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation. This compound is classified with GHS07 signal word 'Warning', with hazard statements H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation).
How is 1-Naphthyl phosphate monosodium salt monohydrate stored and shipped?
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The recommended storage temperature is 2-8°C. The product is carefully packed and exported by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical compounds.
How can I request a sample or a quote?
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To request a sample or a quote for 1-Naphthyl phosphate monosodium salt monohydrate, please contact our sales department via the website or email. Please provide your specific requirements and shipping details.
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